class People {
  float hello(int a,int b){
    return a+b;
  }
  float hello(long a,long b){
    return a-b;
  }
  double hello(double a,double b){
    return a*b;
  }
}
public class Example4_12 {
  public static void main (String args[]) {
    People tom=new People();
    System.out.println(tom.hello(10,20));
    System.out.println(tom.hello(10L,20));
    System.out.println(tom.hello(10.0,20));
  }

}
